Hm, I purchased a UBlox NEO-M8N-0-01 and am getting the same situation - lights on GPS unit indicate a lock, but no lock in QGroundControl. Here’s a video: https://youtu.be/1DXCc3oo-7o
Have you set SERIAL2_PROTOCOL?
SERIAL2_PROTOCOL for the
TELEM2 port on the Pixhawk 2.1? This unit is plugged into GPS2. Regardless, after your comment, I set it to GPS.
SERIAL4_PROTOCOL are also set to GPS.
Other relevant paraemters that are set on the Pixhawk 2.1:
GPS_TYPE = AUTO
GPS_TYPE2 = AUTO
SERIAL4_BAUD = 38400
GPS_AUTO_SWITCH = UseBest
And here’s the wiring diagram that I used to wire up the GPS2 cable:
Log attached: log_40_UnknownDate.bin.zip (2.4 MB)
Let me know if you have any thoughts. Thanks Mallikarjun.